java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label57_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 17:15:01,284 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 17:15:01,286 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 17:15:01,298 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 17:15:01,298 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 17:15:01,299 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 17:15:01,301 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 17:15:01,303 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 17:15:01,305 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 17:15:01,306 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 17:15:01,307 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 17:15:01,307 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 17:15:01,308 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 17:15:01,309 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 17:15:01,310 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 17:15:01,311 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 17:15:01,312 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 17:15:01,314 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 17:15:01,316 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 17:15:01,318 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 17:15:01,320 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 17:15:01,321 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 17:15:01,324 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 17:15:01,333 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 17:15:01,353 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 17:15:01,354 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 17:15:01,357 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 17:15:01,357 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 17:15:01,357 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 17:15:01,357 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 17:15:01,358 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 17:15:01,358 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 17:15:01,358 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 17:15:01,358 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 17:15:01,358 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 17:15:01,358 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 17:15:01,359 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 17:15:01,359 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 17:15:01,360 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 17:15:01,360 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 17:15:01,360 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 17:15:01,360 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 17:15:01,360 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 17:15:01,361 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 17:15:01,361 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 17:15:01,361 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 17:15:01,361 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 17:15:01,361 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 17:15:01,362 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:15:01,362 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 17:15:01,362 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 17:15:01,362 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 17:15:01,362 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 17:15:01,363 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 17:15:01,364 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 17:15:01,365 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 17:15:01,365 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 17:15:01,365 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 17:15:01,447 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 17:15:01,461 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 17:15:01,465 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 17:15:01,467 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 17:15:01,467 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 17:15:01,468 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label57_false-unreach-call_false-termination.c [2018-10-24 17:15:01,530 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1ffe01346/fd890a76436e46b494ed88490dcdee17/FLAG86ef7ab6d [2018-10-24 17:15:02,101 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 17:15:02,102 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label57_false-unreach-call_false-termination.c [2018-10-24 17:15:02,129 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1ffe01346/fd890a76436e46b494ed88490dcdee17/FLAG86ef7ab6d [2018-10-24 17:15:02,159 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1ffe01346/fd890a76436e46b494ed88490dcdee17 [2018-10-24 17:15:02,171 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 17:15:02,173 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 17:15:02,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 17:15:02,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 17:15:02,181 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 17:15:02,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@626b8a09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02, skipping insertion in model container [2018-10-24 17:15:02,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 17:15:02,263 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 17:15:02,757 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:15:02,762 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 17:15:02,857 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:15:02,876 INFO L193 MainTranslator]: Completed translation [2018-10-24 17:15:02,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02 WrapperNode [2018-10-24 17:15:02,877 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 17:15:02,878 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 17:15:02,878 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 17:15:02,878 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 17:15:02,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,911 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:03,063 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 17:15:03,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 17:15:03,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 17:15:03,064 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 17:15:03,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:03,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:03,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:03,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:03,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:03,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:03,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:03,142 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 17:15:03,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 17:15:03,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 17:15:03,143 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 17:15:03,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:15:03,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 17:15:03,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 17:15:03,229 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 17:15:03,230 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 17:15:03,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 17:15:03,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 17:15:03,230 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 17:15:03,230 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 17:15:06,527 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 17:15:06,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:15:06 BoogieIcfgContainer [2018-10-24 17:15:06,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 17:15:06,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 17:15:06,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 17:15:06,536 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 17:15:06,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 05:15:02" (1/3) ... [2018-10-24 17:15:06,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64726449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:15:06, skipping insertion in model container [2018-10-24 17:15:06,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (2/3) ... [2018-10-24 17:15:06,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64726449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:15:06, skipping insertion in model container [2018-10-24 17:15:06,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:15:06" (3/3) ... [2018-10-24 17:15:06,540 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label57_false-unreach-call_false-termination.c [2018-10-24 17:15:06,553 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 17:15:06,562 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 17:15:06,581 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 17:15:06,620 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 17:15:06,621 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 17:15:06,621 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 17:15:06,621 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 17:15:06,621 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 17:15:06,622 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 17:15:06,622 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 17:15:06,622 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 17:15:06,649 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2018-10-24 17:15:06,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-24 17:15:06,660 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:15:06,662 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:15:06,664 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:15:06,671 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:06,671 INFO L82 PathProgramCache]: Analyzing trace with hash 2067767141, now seen corresponding path program 1 times [2018-10-24 17:15:06,674 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:15:06,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:06,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:15:06,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:06,731 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:15:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:15:07,282 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 17:15:07,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:15:07,415 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:15:07,416 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:15:07,416 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:15:07,424 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 17:15:07,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 17:15:07,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:15:07,444 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 3 states. [2018-10-24 17:15:09,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:15:09,045 INFO L93 Difference]: Finished difference Result 550 states and 941 transitions. [2018-10-24 17:15:09,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 17:15:09,047 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2018-10-24 17:15:09,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:15:09,066 INFO L225 Difference]: With dead ends: 550 [2018-10-24 17:15:09,067 INFO L226 Difference]: Without dead ends: 340 [2018-10-24 17:15:09,073 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:15:09,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-10-24 17:15:09,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-10-24 17:15:09,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-10-24 17:15:09,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 571 transitions. [2018-10-24 17:15:09,195 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 571 transitions. Word has length 85 [2018-10-24 17:15:09,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:15:09,196 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 571 transitions. [2018-10-24 17:15:09,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 17:15:09,197 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 571 transitions. [2018-10-24 17:15:09,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-24 17:15:09,206 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:15:09,206 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:15:09,210 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:15:09,211 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:09,211 INFO L82 PathProgramCache]: Analyzing trace with hash -795068642, now seen corresponding path program 1 times [2018-10-24 17:15:09,211 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:15:09,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:09,214 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:15:09,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:09,214 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:15:09,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:15:09,517 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:15:09,517 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:15:09,518 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:15:09,518 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:15:09,520 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:15:09,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:15:09,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:15:09,521 INFO L87 Difference]: Start difference. First operand 340 states and 571 transitions. Second operand 4 states. [2018-10-24 17:15:11,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:15:11,352 INFO L93 Difference]: Finished difference Result 1218 states and 2175 transitions. [2018-10-24 17:15:11,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:15:11,353 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2018-10-24 17:15:11,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:15:11,367 INFO L225 Difference]: With dead ends: 1218 [2018-10-24 17:15:11,367 INFO L226 Difference]: Without dead ends: 884 [2018-10-24 17:15:11,372 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:15:11,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2018-10-24 17:15:11,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 884. [2018-10-24 17:15:11,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 884 states. [2018-10-24 17:15:11,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1407 transitions. [2018-10-24 17:15:11,437 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1407 transitions. Word has length 103 [2018-10-24 17:15:11,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:15:11,438 INFO L481 AbstractCegarLoop]: Abstraction has 884 states and 1407 transitions. [2018-10-24 17:15:11,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:15:11,438 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1407 transitions. [2018-10-24 17:15:11,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-24 17:15:11,450 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:15:11,450 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:15:11,450 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:15:11,450 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:11,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1115310826, now seen corresponding path program 1 times [2018-10-24 17:15:11,451 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:15:11,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:11,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:15:11,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:11,453 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:15:11,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:15:11,732 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:15:11,733 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:15:11,733 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:15:11,733 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:15:11,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 17:15:11,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 17:15:11,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:15:11,735 INFO L87 Difference]: Start difference. First operand 884 states and 1407 transitions. Second operand 3 states. [2018-10-24 17:15:14,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:15:14,302 INFO L93 Difference]: Finished difference Result 2578 states and 4238 transitions. [2018-10-24 17:15:14,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 17:15:14,303 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 120 [2018-10-24 17:15:14,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:15:14,321 INFO L225 Difference]: With dead ends: 2578 [2018-10-24 17:15:14,321 INFO L226 Difference]: Without dead ends: 1700 [2018-10-24 17:15:14,330 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:15:14,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1700 states. [2018-10-24 17:15:14,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1700 to 1700. [2018-10-24 17:15:14,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1700 states. [2018-10-24 17:15:14,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1700 states to 1700 states and 2537 transitions. [2018-10-24 17:15:14,420 INFO L78 Accepts]: Start accepts. Automaton has 1700 states and 2537 transitions. Word has length 120 [2018-10-24 17:15:14,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:15:14,420 INFO L481 AbstractCegarLoop]: Abstraction has 1700 states and 2537 transitions. [2018-10-24 17:15:14,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 17:15:14,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1700 states and 2537 transitions. [2018-10-24 17:15:14,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-24 17:15:14,429 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:15:14,430 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:15:14,430 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:15:14,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:14,431 INFO L82 PathProgramCache]: Analyzing trace with hash 2052687454, now seen corresponding path program 1 times [2018-10-24 17:15:14,432 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:15:14,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:14,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:15:14,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:14,433 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:15:14,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:15:14,758 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:15:14,759 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:15:14,759 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 17:15:14,759 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:15:14,760 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 17:15:14,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 17:15:14,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 17:15:14,761 INFO L87 Difference]: Start difference. First operand 1700 states and 2537 transitions. Second operand 6 states. [2018-10-24 17:15:16,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:15:16,541 INFO L93 Difference]: Finished difference Result 4353 states and 6550 transitions. [2018-10-24 17:15:16,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 17:15:16,542 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2018-10-24 17:15:16,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:15:16,560 INFO L225 Difference]: With dead ends: 4353 [2018-10-24 17:15:16,560 INFO L226 Difference]: Without dead ends: 2659 [2018-10-24 17:15:16,574 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 17:15:16,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2659 states. [2018-10-24 17:15:16,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2659 to 2619. [2018-10-24 17:15:16,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2619 states. [2018-10-24 17:15:16,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 3469 transitions. [2018-10-24 17:15:16,660 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 3469 transitions. Word has length 156 [2018-10-24 17:15:16,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:15:16,660 INFO L481 AbstractCegarLoop]: Abstraction has 2619 states and 3469 transitions. [2018-10-24 17:15:16,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 17:15:16,660 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 3469 transitions. [2018-10-24 17:15:16,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-24 17:15:16,671 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:15:16,671 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:15:16,671 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:15:16,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:16,672 INFO L82 PathProgramCache]: Analyzing trace with hash -533953783, now seen corresponding path program 1 times [2018-10-24 17:15:16,672 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:15:16,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:16,673 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:15:16,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:16,673 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:15:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:15:16,914 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 81 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 17:15:16,915 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:15:16,915 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 17:15:16,916 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 173 with the following transitions: [2018-10-24 17:15:16,918 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [33], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [253], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [317], [319], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-24 17:15:16,995 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 17:15:16,996 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 17:15:25,362 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 17:15:25,364 INFO L272 AbstractInterpreter]: Visited 68 different actions 68 times. Never merged. Never widened. Never found a fixpoint. Largest state had 42 variables. [2018-10-24 17:15:25,375 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:25,375 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 17:15:28,999 INFO L232 lantSequenceWeakener]: Weakened 140 states. On average, predicates are now at 79.87% of their original sizes. [2018-10-24 17:15:28,999 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 17:15:30,159 INFO L413 sIntCurrentIteration]: We have 171 unified AI predicates [2018-10-24 17:15:30,159 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 17:15:30,160 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:15:30,160 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [6] total 16 [2018-10-24 17:15:30,161 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:15:30,161 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-24 17:15:30,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-24 17:15:30,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-10-24 17:15:30,162 INFO L87 Difference]: Start difference. First operand 2619 states and 3469 transitions. Second operand 12 states. [2018-10-24 17:15:41,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:15:41,472 INFO L93 Difference]: Finished difference Result 5293 states and 7050 transitions. [2018-10-24 17:15:41,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 17:15:41,472 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 172 [2018-10-24 17:15:41,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:15:41,488 INFO L225 Difference]: With dead ends: 5293 [2018-10-24 17:15:41,489 INFO L226 Difference]: Without dead ends: 2680 [2018-10-24 17:15:41,500 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 177 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2018-10-24 17:15:41,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2018-10-24 17:15:41,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 2680. [2018-10-24 17:15:41,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2680 states. [2018-10-24 17:15:41,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2680 states to 2680 states and 3539 transitions. [2018-10-24 17:15:41,593 INFO L78 Accepts]: Start accepts. Automaton has 2680 states and 3539 transitions. Word has length 172 [2018-10-24 17:15:41,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:15:41,593 INFO L481 AbstractCegarLoop]: Abstraction has 2680 states and 3539 transitions. [2018-10-24 17:15:41,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-24 17:15:41,594 INFO L276 IsEmpty]: Start isEmpty. Operand 2680 states and 3539 transitions. [2018-10-24 17:15:41,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-24 17:15:41,609 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:15:41,609 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:15:41,610 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:15:41,610 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:41,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1848130412, now seen corresponding path program 1 times [2018-10-24 17:15:41,611 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:15:41,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:41,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:15:41,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:41,614 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:15:41,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:15:41,842 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 99 proven. 15 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-24 17:15:41,842 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:15:41,842 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 17:15:41,843 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 182 with the following transitions: [2018-10-24 17:15:41,843 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [10], [14], [18], [22], [26], [30], [33], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [253], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [317], [319], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-24 17:15:41,849 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 17:15:41,849 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 17:15:59,233 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 17:15:59,233 INFO L272 AbstractInterpreter]: Visited 90 different actions 156 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-10-24 17:15:59,239 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:59,239 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 17:16:03,401 INFO L232 lantSequenceWeakener]: Weakened 151 states. On average, predicates are now at 80.24% of their original sizes. [2018-10-24 17:16:03,401 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 17:18:46,407 INFO L413 sIntCurrentIteration]: We have 180 unified AI predicates [2018-10-24 17:18:46,407 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 17:18:46,408 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:18:46,408 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-10-24 17:18:46,408 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:18:46,408 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-24 17:18:46,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-24 17:18:46,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2018-10-24 17:18:46,409 INFO L87 Difference]: Start difference. First operand 2680 states and 3539 transitions. Second operand 19 states. Received shutdown request... [2018-10-24 17:19:24,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-24 17:19:24,476 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 17:19:24,484 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 17:19:24,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 05:19:24 BoogieIcfgContainer [2018-10-24 17:19:24,485 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 17:19:24,486 INFO L168 Benchmark]: Toolchain (without parser) took 262314.17 ms. Allocated memory was 1.5 GB in the beginning and 3.2 GB in the end (delta: 1.7 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -264.5 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-24 17:19:24,487 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 17:19:24,488 INFO L168 Benchmark]: CACSL2BoogieTranslator took 703.21 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-24 17:19:24,488 INFO L168 Benchmark]: Boogie Procedure Inliner took 185.52 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 758.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -831.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2018-10-24 17:19:24,491 INFO L168 Benchmark]: Boogie Preprocessor took 78.18 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 17:19:24,492 INFO L168 Benchmark]: RCFGBuilder took 3388.76 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 117.4 MB). Peak memory consumption was 117.4 MB. Max. memory is 7.1 GB. [2018-10-24 17:19:24,493 INFO L168 Benchmark]: TraceAbstraction took 257952.75 ms. Allocated memory was 2.3 GB in the beginning and 3.2 GB in the end (delta: 928.0 MB). Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 417.9 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-24 17:19:24,499 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 703.21 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 185.52 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 758.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -831.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 78.18 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3388.76 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 117.4 MB). Peak memory consumption was 117.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 257952.75 ms. Allocated memory was 2.3 GB in the beginning and 3.2 GB in the end (delta: 928.0 MB). Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 417.9 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 410]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 410). Cancelled while BasicCegarLoop was constructing difference of abstraction (2680states) and FLOYD_HOARE automaton (currently 16 states, 19 states before enhancement),while ReachableStatesComputation was computing reachable states (32 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 208 locations, 1 error locations. TIMEOUT Result, 257.8s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 57.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1132 SDtfs, 1569 SDslu, 434 SDs, 0 SdLazy, 2935 SolverSat, 647 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.8s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 389 GetRequests, 257 SyntacticMatches, 80 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 177.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2680occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 25.8s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9948893322877068 AbsIntWeakeningRatio, 0.21652421652421652 AbsIntAvgWeakeningVarsNumRemoved, 2227.5185185185187 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 40 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 817 NumberOfCodeBlocks, 817 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 811 ConstructedInterpolants, 0 QuantifiedInterpolants, 321717 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 307/333 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown